A new report from JP Morgan quantifies just how significant the enterprise shift to the cloud has become.

The Wall Street giant queried 207 CIOs who have budgets of more than $600 million to find that 16.2% of the workloads under management by the CIOs run in the public cloud and within five years, 41.3% are expected to.

When CIOs were asked which mega-vendor would be the most critical and indispensable to their IT environment, unsurprisingly Microsoft took the top spot. Amazon Web Services secured the second though, followed by Cisco. Which vendors have the most to lose in this shift to the cloud? IBM and HP, they said.

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Senior Editor Brandon Butler covers the cloud computing industry for Network World by focusing on the advancements of major players in the industry, tracking end user deployments and keeping tabs on the hottest new startups.